Air compressor



Feb. 10, 1931. E v 1,791,672

AIR COMPRESSOR Filed March 11, 1929 2 Sheets-Sheet I BY Wfl/M V ATTORNEY.

Feb. 10, 1931. F. P. HINCKLEY 1,791,672

AIR COMPRESSOR 5 Filed March 11. 1929 -2 Sheets-Sheet 2 ATTORNEY.

' rnnnnnroxni E NCKLEYQ F- ;rAoKso1v,-'MIoHIG 1v AIR "COMPRESSOR Application filed Marchll, 1929. Serial No. 345,911! ihgly invention relates to an apparatus for crank pin extending from the disk 12. 11;; I f compressing aira-ndanohject of my improve" is an extension from-the. outer end :of the ment is to provide compressor to handle shaft 11 which maybe manipulated to start small quantities of air t-hatis simple inconthe motor a v V V lltstruction, efiective in operaton and that can 14Exand;15*are' pistonsrigidly' connected e be readily adjusted tofand coupled'with a together by a yoke having an; upper v and ,j motor; v v a w I lower bar-18 and ISa. Said pistons ,fitv'and I I secure this object in the apparatus ilareada-pted to slide respectivelyin the-cylinlu'stratedin'the'accompanying drawings, in .der'sS andr3ai. l we a I' i a q f Eachof said pistons has a groove 14a filled 60, Figurel'is angele'vation of an apparatus with. an oil -..absorbingqs'ubstance,r such as embodying my invention. felt, and a groove 14?; having-piston rings Figure 2 is a plan'vie'w of th'e same. therein; g, ;g,-. are oil/cups adapted to su r Figure 3 is a section on an enlarged scale ply oilto the uppersportionsof the pistons p in the plane III, III, Figure 2. 14 and '15, which oilis distributed by the. 6451- Figure 4 is ahorizontal section approximaterial in-the groovel lm V mately on the line IV, IV, Figure 1. 16 is a piston rod pivoted at oneend on Figure 5 is a vertical section approxithe pin 17in the piston 15 and at the :other 'mately on the line V, V, Figure 4. end to the crank pin" 13. The connecting v i Figure 6 is a detail cross-section of the rod- 16'is so shaped in 'cross section as to '10 connecting rod, and i form a trough 16a2in its 'upperrsu'rface be- Figure 7 is a longitudinal section of the tween its ends. Holes :166 and 16@ are, connecting rod and an adjacent part of the. formed connecting'the ends of the; trough piston yoke. 1 164; respectively with the pins13 and f 2 2 is the casing of an electric motor ha-v- Inthe upper surface ofthe upper bar 18 ing a cylindrical outwardly projecting bearof the yokethere is formed a receptacle. 18a ing 2a for the motor shaft 11. throughthe bottom'otwhich there is a pas- 3 is a cylinder closed at one end and opensage 18?) (Figr7 )2 5 L ing at the other into an extension that shall 5 is an oil hole in the upper Wall of the to form half of the crank case. 3a is a seccrank case 36, above the receptacle 18a 7 ,80

ond cylinder, entirely similar to 3 and hav- I Oil is supplied to the receptacle f. 18a ing an entirely similar extension that is through the hole e5'andruns through the pasjoined with the extension of the cylinder 3 to sage 18?) upon the connecting rod 16 and incomplete the crank case of an opposed-cylinto the trough 16a from whence'it is supplied der pump 33 and 33a arefianges respectively through thejholes 16b and 16 to the pins 13 8.5

around the open end of theextension from and 17 and the bearingsfor said pins in the the cylinder 3 and the extension from the end of the rod 16; I' h cylinder 3a, which are bolted together to sei 7 is a passageway extending vertically v cure the cylinder in place. 30 and 3060 are vfrom the bottomiof each of thecylinders at r half collars connected respectively with the the outer endthereof andSisa vertical 'pascylinders 3 and 3a. Said half collars em sage extending from the 1 top-and c0nnectbrace the cylindrical-extension 2a and are ing withthe passage 8', 7aand Sci are brass Y clamped thereon when the flanges 33 and'33a plugs with openings therethrough screwed are bolted together to secure the cylinders finto the outer ends'ofthe passages 7 and 8. 45 in place- -16 is a horizontal passage extending inward-V 23 and 23aare boltswhich may be used to ly from the bore ofthe cylinderand connect-' help secure the cylinders to the motor casing with the' innerends of the passages '7 ing. 11 is the motor shaft resting in the and8.) -10 isaninwardly openingvalve in hearing 2a and 12 is adisk keyed upon the the passage ;7, normally held closed by a 50 shaft 11 within the crank-case 371' 13 is a spring'lfla and-9, is an; outwardly opening bearing 2a and said flanges are bolted together clamping the cylinders upon the bear ing 2a. The bolts 28 and 23a may also be used, a a a 'In assemblingas above describedthe pin' 13 has been engaged in its aperture in the free end of the connecting rod 16. I

the receptacle 18a, and the motor is started, either by the current itself or by turning the shaft by hand by means of the extension 11a, or both.

The turning of theshaft llreciprocates the pistons 3, 3a, through the connecting-rod l6 whichact in the usual'way to compress air into the tank 4. The cups 9, 9, supply oil to the interiorofthe cylinders and the material in the grooves 14a acts to wipe the oil over the surface and distribute it thereon.

Oil is supplied to the "receptacle 18a through the hole 5 and falls upon the connecting rod 16 and into-the trough 16a, from whence it is supplied to the pins 13 and 17 through the passages 'ltlband 16,0.

' What I claim is:

1; The combination of a motor having a shaft bearing thereon, an opposed cylinder pump, each cylinder having a portion of a common crank case thereon and means for securing the portions of the crank case tocommon crank case thereon andmeans for" securing the portions of the crank case together and thereby clamping said bearing to} secure the pump in place, a shaft in said bear.-

ing having a crankat its end,'rigidly connected pistons in said cylinders, a connecting rod pivoted at one end to one of saidpistons and at the other end to said crank, said connecting-rod being provided with a receptacle along itsupper edge connecting at its ends with the bearings in said rod and means I for supplying oil to said receptacle.

4. The combination of a motor having a common crank case thereon and means for secur ng the portions of the crank case to-J- getherancl thereby clamping said 'bearing V g to secure the pump in place, a shaft insaid Oil is now placed in the cups 9, g, and in a bearing having a crank at its end, rigidly connected pistons 1n said cyl1nders,-a connectmg rod pivoted at one end to -'one of "saidpiston's and'at the other end to said adapted to supply oil to the receptacle along the upper'edge of the connecting rod.

In testimony whereof, Isignthis specification. I

FREDERICK P. HINCKLEY. V

gether and thereby clamping said bearing to secure the pump in place, a shaft in said bearing having a crank at its end, rigidly connected pistons in said cylinders, a connecting rod pivoted at one end to one of said pistons and at the other end to said crank.

2. The combination of a motor having a shaft bearing thereon, 'an opposed cylinder pump, each cylinder having a portion of a common crank case thereon and means for securing the portions of the crank case together and thereby clamping said bearing to secure the pump in place, a shaft in said bearlng having a crank at its'end, rlgidly connected pistons in said cylinders, said crank engaging said pistons inthe crank case, an Oll receptacleln the rigid connectlon j of said pistons, said receptacle being adapted to supply oil to the crank connection 3. The combination of a motor having a shaft bearing thereon, an opposed cylinder pump, each'cylinder having a portion of a 

